Item Type Facial Muscle Training DeviceMaterial SiliconeSize One sizeColor Purple blue black red greyBlue level 1 to 40 pounds resistancePurple level 2 to 50 pounds resistanceBlack level 3 to 60 lbs resistanceFeatures It is a facial exercise product that can help strengthen and tone facial muscles Get a clearer face and give your youthful appearance a new look It only takes 10 minutes a day to see the difference After enough training rest and nutrients your facial muscles will grow like other muscles It is strongly recommended that you start from level 1 blue and gradually enter level 3 black because your mandibular muscles need to be activated and become stronger Usage 1 Boiling when the product is boiled the entire product should be placed in boiling water Leave it for 15 25 seconds Then rinse the product with hot water 2 After adapting to the teeth boil the product for 10 15 seconds and rinse the hot water place the product on the teeth and then gently press down on the white bite strips to make them most comfortable to mold 3 practice then you are good Please follow our recommended exercise regimen to get the best results and reduce the risk of injury Package Included 1 x Facial Muscle Training Device